I'm saying the following becos I've never seen DP's photos before. Movie critics can critic movies well, but they themselves may not be able to write the best movie script or produce the best cinematography. However, they know what is nice when they see it. You can disagree with them, but before watching movies, many people will still look at these critics first (besides the synopsis), analyse it and make a decision on whether to watch that movie.
Just treat Deadpoet's comments as another source of reference from another point of view. He may not be nice, but he does give good critics at times. It is his style. You'll never hear him saying "Wow, your pics are great. Thumbsup". If your photos are good, probably he'll keep quiet and make no comments.
That's how I see it. An honest feedback is most important.